Block Diagram Supply - Philips LC4.9E Service Manual

Block Diagrams, Test Point Overviews, and Waveforms

Block Diagram Supply

SUPPLY 42" FHP
PRECONDITIONER
A5
PRECONDITIONER
6600
GBU8J 3
F601
5600
6611
1 4 16 14
- +
7610
5612
2603 STW26NM50
2
1 2 4 6 3610 D
G
7608
S
6606
3611 3614
6605
F604
3608
2663
3663 6661
6660 2664
3660
F608
7661
3668
MC34063AD 6641
8 1 F609
DC TO DC
5660 6665
7 2
7650 CONVERTOR
I622
MC33368 16
LINE 2662
6663 BIAS
7
ZC
CONTROL
12
VCC
I625
F610
3605
3641
11
GATE 7641
5
MULT
3
I618 VFB
CS
3651 6 D
I629 2640 7640
G
BSN20
S
3640
3666
2666
AC3 100-230VAC2
AC5 100-230VAC1
3450 3451
0 0
MAINS FILTER UNIT +t +t
5005
5401
0308
5402
1400
2 2 1 2 1 2
MAINS MAINS
T6.3A
FILTER 1 1 FILTER
1450 1460 F411
4 3 4 3
A2 FILTERS STANDBY
1M05 7465
7460 7470
1
SECOND
2 ACTIVATING
STANDBY ACTIVATING
DELAY
6513 6512
BYG10 BYG10 3506
+t
400V-HOT
A
2503
6510 6511
A5 BYG10 BYG10
- STANDBY SUPPLY -
5500
F500
6504 F502
RS1G
2 6
CONTROL
3507 3 7
7500
I510
TNY256
I508 8
4 5
ENABLE
DRAIN
9
7-8
SOURCE
4
6505 F503
SB34
1
3501
4 1
3505
7501
TCET1102
1
3 7502
2 TS2431 2
3503
3
I504
6503
3508
RS1G
+25V-HOT
2505
LC4.9E AB
A6 LLC SUPPLY
HOT
- LLC-CONVERTER -
F600
400V-HOT 400V-HOT
A2
- BIAS-SUPPLY - 7093
A
LM317T
F001
400V-HOT
3092
25V-HOT BIAS
2616 7090 :
7092 3095
2053
PROT
3096
SW25V-HOT 6095 7007
SW25V-HOT
5001
7020 STU16NB501
7001
15 HIGH
MC34067P 10 G
SIDE
VCC
DRIVE
I038
11
CONTROL
F003
F005
7017
14 4
7018 OA
3
2
SOFT 12
6 OB
7006
START 7008,
+ 7021, 7012 BZG03
8 10 F004
CURRENT FI
LOW
PROTECTION 14 G
7 SIDE
3011
DRIVE
I057
13
3680
3050
3671
A7 AUX-SUPPLY
70-90V
- VA-SUPPLY -
5121
3452 I101 I107
1110 3118
2 1
0
-t
TA5
D
S 3 4
7110
VCC &
HOT
DRAIN 6120
CONTROL
G 7117
COLD
PSMN035
7112
TEA1507
8
3117
1 DRAIN
I105 VCC
6
3 DRIVER
CTRL
5
SENCE
2
CONTROL
+9V_STBY_SW
3113 6113
4
DEMAG
A3
6111 2114
7120
TCET1102
SUPPLY_ON
PROTECTIONS
A3
+5V_STBY_SW
VS PROTECTION
+9V_STBY
3308
VS_UNSW
70-90V
6312 3312
3300
7308 A+B
+5V_STBY_SW 7
1
2V5 CIRCUIT
6
6313
2V5 5
+5V_STBY_SW
2
4
3304
2V5
7304
TL43IC2 1
3324
COLD 3
HOT
+25V-HOT
2
6. 22
HOT COLD
+5V_STBY_SW
4
1
VS-SUPPLY
7003
TCET1102
2
3
1084
5002 F1A
16
7005
14
D
S 12
3
6
11
I083
10
D
9
S
5004 6044
STTH2003C
16 3
14 2
2020
12
1
3
6
6021
I083 1083 BYU28
11
F2,5A
10
6045
1082 BYU28 2022
9
F2,5A
7010,7011
4 1
7002 CONTROL
TCET1102 CIRCUIT
3 2
HOT COLD
- VCC SUPPLY -
VS_UNSW
5220
70-90V
1200
1
VA
3
T2A
I236 2
I214
2121 7200
BSN304 7212 4
I213
TEA1507 7217
D 8
I216
VCC_GO G 1 PSMN070
DRAIN
VCC
A3 S D
6 G
3 DRIVE
CTRL S
3202 5
SENCE
4
7202
DEMAG
3218
BSN20 I208 GND
D
G 3214
S
6211
I220 5
2210 7
VA +30V
VRA 4
A3
4 1 VSA_CONTROL
VA A3
ADJ. 3
3 2
SUPPLY-ON
VA PROTECTION VCC PROTECTION 12V PROTECTION
VA VCC +12V
6321 3321 6333 3333
3311 3320 3332
7308 C+D 7330 A+B 7330 C+D
11 7 11
13 1
3313 10 6 10
6322 6334
2V5 9 2V5 5 2V5 9
14 2
8 4 8
+9V_STBY
3317
7375
7389
7376 +5V_STBY_SW
+12V_OVP
VSA-
3389
CONTROL
A7
LOGIC
3388
A7 AUX-SUPPLY
LATCH
A3
- AUDIO SUPPLY - DC_PROT
A3
1002
F293 TO 1002
DC_PROT 7
6291
VSND_POS 6 C
D458L20U
5290
5
PDP AUDIO
2292 GND_SND 4
6291
4 2
3
VSND_NEG 2
2294
3 1 6292 1
+12V SUPPLY
F294
VB
1200
+30V
7260
T2A
7,8
+12V_OVP L4973
3
3345 6348
2
CONTROL
3346
12
3072
VTUN
A7
V.S._UNSW
VS- SWITCHED
70-90V
D S
7050
PSMN035
VS_UNSW
F016 G
70-90V
I200
VS
VB
CONTROL
SWITCH ON
POK LOGIC
VS
A3
+30V
SWITCH
G
LOGIC
SEQUENCE
VSA-CONTROL
A3 DISCHARGE
I202
VRS
A3
VRS
FEEDBACK
F140
VCC
6225
14 3
5225
2
13
PROTECTIONS
12 A3
1 2225
11
5229
+9V_STBY_SW
F116
6230
3360
3363
18
16
2230
FAN CONTROL
7230
L4940 7366-2
A3 5
3228 7
+8V6
1
6
+2.5Vref
7220
TCET1102 7227
3224
TL431CZ 6378 7326
2 7327
+5V_STBY_SW
POK
A7
DETECTION
+8V6
3225
CIRCUIT
+8V6 UNDER
VOLTAGE PROT.
DC_PROT VCEGO LATCH
3349
+5V_STBY_SW
7351
3350 6347 3345
6340 3338 3358 3361
3353
7348
7352
3346
3347
6364 3354
13
7362
6341 F343
14 7004
3344
3364 +5V_STBY_SW
6362
3343
3341 7341
3342
0323
VA 1
2
NC
VCC 3
4
TO
1M10
5
CN23
1 TO 1M10 6
PDP
+12V
2 7
AL NC
3 VS 8
4 AMBIENT 9
LIGHT 10
0333
VCC 1
2
0323
3
11
4 TO
10
5 CN33
+9V_STBY
+12V 9
6 PDP
TO 1M46 NC
8
VS 7
VTUN
7 B21
8
+5V_STBY_SW
6
9
SSB
VCC 5
4
3
+8V6
2
1 0342
VA 1
2
3345 NC
3
NC TO
VCC 4
CN42
3346 5
PDP
6
NC
VCC 7
VS
VS
6142
2021 0352
BYD33D
VA VA VA 1
2
NC
3 TO
NC
4 CN52
5 PDP
6
NC
VCC
7
3053
FITER STANDBY
A2
0306
1
+3V3_STBY_SW
I201
3 TO
4 CN6
D
7052 PDP
1004
IRFR18N15D VCC
6
S
T2A
0311
1
2
3
4
VRA 5 TO
A3 VRS 6 CN11
A3 VCEGO 7 PDP
A3 VSAGO 8
A3 PFCGO 9
A3
- ERROR LOGGING -
0319
1
POR F300
2
F301
3
F302
4
F304
5 TO 1M03
F305
6
B21
STANDBY 7
8
SSB
+9V_STBY_SW
9
F309
POWER_OK 10
F310
VA VS
3396 3302
3303
3397
STANDBY
3305
3316
3390 0307
VSK 1
I900
6366
2
I943
+5V_STBY_SW VAK 3
I901
5
3391 2x VRS 7
7391 I903
TO
2x VRA
9
I904 CN7
PFCGO 11 PDP
A2
VCEGO 13
I905
A3
VSAGO 15
A2 I906
A3
20
7393 NC
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